Some states award delegates to candidates on a winner-take-all basis, meaning that the candidate with the most votes in a state is awarded all of that state's delegates. Other states award delegates in proportion to each candidate's share of the primary vote.
Provocative angiography involves a full diagnostic angiogram followed by administration of intra-arterial procoagulant agents to identify an occult bleeding source in patients who have normal test results after lower gastrointestinal bleeding.
Degree of confidence. Scintigraphic bleeding scans are highly sensitive and specific at detecting the presence of active gastrointestinal bleeding, with reported rates of 93% and 95%, respectively. For this reason, scintigraphic bleeding scans are commonly used as preliminary examinations prior to angiography.